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These reference charts contain detailed information about generated frequencies, connector pinouts
and jumper pinouts for the ATTO FastStream SC RAID storage controllers.
Generated frequencies
Description
DDR2 SDRAM
SAS Reference Clock
EPLD Clock
SAS Multiplexer Clock
Ethernet Mac PCI
Ethernet Phy Clock
PCI Express Clock Generator
PCI Express Reference Clock
Fibre Channel Controller PCI-E
Fibre Channel Reference Clock
SAS HBA Reference Clock
HBA Bridge Configuration
Table 1 Data rate in cables
Cable
Optical Fibre Channel
SAS Device Cables
1000/100/10 Mb Ethernet 125 MHz
Connector pinouts
Table 2 ATX 24-pin power connector pinouts (J1)
Pin Voltage/Signal
VDD3.3
1
2
VDD3.3
3
Ground
VDD5V
4
5
Ground
6
VDD5V
7
Ground
ATX_POWER_OK
8
9
5VSB
10
VDD12.0
VDD12.0
11
VDD3.3
12
Appendix F Reference Charts
Frequency
266.67MHz
125MHz
66.67MHz
33.33MHz
66.67MHz
25MHz
25MHz
100MHz
133.33MHz
106.25MHz
150MHz
3.686MHz
Origin
U23
U39
U33
U27
U23
Y1
Y3
U34
HBA(U6)
HBA(U7, U15) Oscillator
HBA(U19)
HBA(Y1)
Date Rate
8 Gb (4 GHz fundamental clock)
6 Gb (3 GHz fundamental clock)
Type
Level
Derived
SSTL1.8
Oscillator
LVPECL
Oscillator
TTL/CMOS
Derived
TTL/CMOS
Derived
TTL/CMOS
Crystal
-
Crystal
-
Oscillator
LVPECL
Derived
TTL/CMOS
LVPECL
Oscillator
LVPECL
Crystal
-
xxviii
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